Compilare: user.cpp: In function 'void insert(char*, int)': user.cpp:38: warning: array subscript has type 'char' user.cpp:41: warning: array subscript has type 'char' user.cpp:43: warning: array subscript has type 'char' user.cpp: In function 'void updateNode(int, int, char)': user.cpp:58: warning: array subscript has type 'char' user.cpp:62: warning: array subscript has type 'char' user.cpp: In function 'void search(char*, int, int*)': user.cpp:112: warning: array subscript has type 'char' user.cpp:114: warning: array subscript has type 'char' user.cpp: In function 'void afis()': user.cpp:123: warning: unused variable 'R' /tmp/ccx5nnpq.o: In function `read()': user.cpp:(.text+0xbd): warning: the `gets' function is dangerous and should not be used.